Yo All! New data for poll=8 (256 Sec). Like before, all data is 90% bounds, run over 24 hours or more. Looks like 8 is clearly too high for either of these PPS hosts. So this is the end of this test series.
Xeon: Local Clock Local Clock Local Clock PPS PPS Poll Freq Offset 90% Jitter 90% Stability 90% Offset 90% Jitter 90% 1 495ppb 16.9µs 27.7ppt 39.0µs 26.7µs 2 332ppb 20.9µs 15.6ppt 40.6µs 29.7µs 3 165ppb 20.5µs 7.5ppt 34.6µs 27.9µs 4 465ppb 15.5µs 3.1ppt 22.5µs 20.1µs 5 435ppb 13.3µs 3.4ppt 17.7µs 16.9µs 6 570ppb 10.2µs 1.2ppt 34.2µs 16.3µs 7 330ppb 11.0µs 1.4ppt 102 µs 21.2µs 8 251ppb 43.6µs 2.1ppt 364 µs 103 µs I will go with poll=5 (32 sec) for this host. One could also argue for poll=6 (64 sec). RasPi3: Local Clock Local Clock Local Clock PPS PPS Poll Freq Offset 90% Jitter 90% Stability 90% Offset 90% Jitter 90% 1 1.1 ppm 0.43µs 2.3 ppt 1.6µs 0.34µs 2 1.1 ppm 0.08µs 2.9 ppt 2.2µs 0.20µs 3 0.5 ppm 0.18µs 1.9 ppt 3.0µs 0.56µs 4 1.12ppm 1.27µs 2.26ppt 10.3µs 4.11µs 5 1.36ppm 1.34µs 2.64ppt 11.4µs 4.43µs 6 1.4 ppm 3.3 µs 2.2 ppt 68. µs 9.7 µs 7 1.15ppm 1.14µs 1.77ppt 9.4µs 3.45µs 8 0.89ppm 39.9 µs 6.86ppt 977. µs 95.2 µs Here poll=1 (2 sec) looks best to me. A good reason to get poll=0 fixed so I can test that. The bottom line to what is the best poll value? The answer: it depends... RGDS GARY --------------------------------------------------------------------------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 RGDS GARY --------------------------------------------------------------------------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588
pgpl5okd5_YME.pgp
Description: OpenPGP digital signature
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